How much more solute can dissolve in a saturated solution?
Thus, the solution can dissolve 30 g (50 g - 20 g = 30 g) more solute to become saturated. A solution contains 50 g of NH4Cl at 70°C (in 100 mL H2O). How much more solute can dissolve in the solution?
What is the relationship between temperature and concentration of potassium iodide?
For option 1, the temperature of all solutions is at room temperature and only the concentration of potassium iodide changes. Students need to identify the independent, dependent, and control variables in this demonstration.
How much solute is in a supersaturated solution of KNO3?
A supersaturated solution contains 100 g of KNO3 is cooled to 50°C (in 100 mL H2O). How much solute will crystallize out? At 50°C, the solubility of KNO3 in 100 ml of water is 85 grams.
What is the solute (s) of the resulting solution?
The solute(s) of the resulting solution are: Sodium Chloride and bicarbinate 1 g sodium chloride is dissolved in 100 mL ethanol. The solute of the resulting solution is: NaCl 5 g salt and 3 g sugar are dissolved in 50 mL water. The solutes of the resulting solution are: Salt and Sugar True or false:
Which ions are the limiting reactants?
The thiosulfate ions are the limiting reactant. The rate of reaction is first-order in potassium iodine. For the qualitative option, the details of the mechanism are not revealed to the students in order to have the students focus on the kinetics concepts of changing the concentration of one reactant versus time or reaction.
What reacts with starch to form the blue starch-pentaiodide complex?
However, after all the thiosulfate ions have been consumed by the reaction of equation 2, triiodide ions react with starch to form the blue starch-pentaiodide complex .". The "A" beakers contain sodium thiosulfate, potassium iodide, and a little bit of starch. The "B" beakers contain hydrogen peroxide and sulfuric acid.
What is the rate of reaction?
The rate of reaction is how fast or slow a reaction occurs relative to a standard. The greater the rate of reaction, the less time it takes for the reaction to go to completion, i.e. the less time it takes for reactants to be converted to products. When focusing students' attention on the role of concentration of reactants with respect to ...
How does reaction rate relate to the number of effective collisions?
Reaction rate is proportional to the number of effective collisions, which depends on the concentration of the reactants.
When focusing students' attention on the role of concentration of reactants with respect to the rate of reaction, it is?
When focusing students' attention on the role of concentration of reactants with respect to the rate of reaction it is important to discuss and or make the connection to collision theory. The colli sion model assumes that molecules must collide in order for a reaction to occur. The more molecules present, the more chance for frequent "effective" ...
What is the concentration of Na2S2O3?
The concentrations of the other reactants remain constant. ( [H2SO4] = 0.10 M; [Na2S2O3] = 0.0028 M). By comparing the length of the induction periods, conclusions can be drawn regarding the dependence of the rate of reaction on the concentration of reactants.
How saturated is solution X?
Solution X is saturated at 40 g per 100 g of water. If 45 g of X is dissolved in 150 g of water, solution K is
What are the solutes of the resulting solution?
The solutes of the resulting solution are: Salt and Sugar. True or false: Vinegar is composed of 5% acetic acid and 95% water. Thus, the solute of vinegar is acetic acid. True. True or False: Solids, liquids, and gases can all be solutes dissolved in solution.
What can be used to dilute a concentrated solution?
Increasing the volume of solvent or decreasing the amount of solute can both be used to dilute a concentrated solution.
What happens to the rate of solubility of salt in water?
D. As the size of salt particles increases , the rate of solubility of salt in water. For solid solute, the rate of solubility decreases when the size of particles increases. Salt is a solid, so its rate of solubility decreases as its particle size increases.
How much Na2CO3 is dissolved in water?
10.6 grams of Na2CO3 is dissolved in water to make a 1.25 L solution. What is the molarity of the solution? (Molar mass of NaOH = 106 g/mol)
What is a solute?
A solute is a solid substance that is dissolved.
How much water is added to 100 ml sodium hydroxide?
2 mL water is added to 100 mL sodium hydroxide solution. The solvent of the resulting solution is: